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CVE-2019-0683 is an elevation of privilege vulnerability in Microsoft Active Directory Forest trusts. The vulnerability arises from a default configuration that allows an attacker in a trusting forest to request delegation of a Kerberos TGT for an identity from a trusted forest. This is exploited by combining Kerberos unconstrained delegation with the Print Spooler service on Domain Controllers. An attacker who compromises a system with unconstrained delegation can use the Print Spooler (via MS-RPRN's RpcRemoteFindFirstPrinterChangeNotification) to obtain the Domain Controller's Kerberos TGT, enabling full impersonation and credential theft, including DCSync attacks. The vulnerability is particularly impactful in environments where unconstrained delegation is enabled and the Print Spooler service is running on Domain Controllers.
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Cross-references every affected SKU, including bundled OEM variants.
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